Anxiety?

So I haven't been to the doctors yet, but I'm pretty positive I have anxiety. I'm irritated almost all the time, I can't focus on doing one thing, when we have plans to go out with friends my heart races and I get really nervous, if my fiance is leaving to go somewhere and I want him to stay home I get extremely pissed and my heart races. I don't know if these are signs of anxiety or not. I was hoping to get some answers from here and then maybe make an appointment with my doctor.